Perhaps you should try some spelling variations:
khien hach » thien hach, khien thich, hien hanh
may trinh » may tinh, lap trinh, quy trinh
trinh vat » trinh van, trinh luat, sinh vat
hach xuc » thach duc, hanh xu, cach xu
cau treo » cau theo, cau tren, cau triet
tu sach » thu sach, su sach, te sach
xuc may » xuc hay, truc may, phuc may
cuu tre » cau tren
cua tre » cua te, cua triet, dua tren
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang x hoi. dieu khien hach xuc may trinh vat ((((cuu tre) OR (cau treo))) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. dieu khien hach xuc may trinh vat ((((cuu tre) OR (cau treo))) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. dieu khien hach xuc may trinh vat ((((cuu tre) OR (cau treo))) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. dieu khien hach xuc may trinh vat ((((cuu tre) OR (cau treo))) or (cua tre))*.